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A-fib Aarskog syndrome Aase syndrome AAT deficiency Abacterial cystitis Abdominal aortic aneurysm Abdominal pregnancy Abducens palsy Abetalipoproteinemia Ablatio placentae Abnormal heart rhythms Abnormality of the urea cycle - hereditary ABO incompatibility Abortion - complete Abortion - elective or therapeutic Abortion - incomplete Abortion - inevitable Abortion - infected Abortion - spontaneous Abortion - threatened ABPA Abscess Abscess - amebic liver Abscess - anorectal Abscess - areolar gland Abscess - Bartholins Abscess - brain Abscess - epidural Abscess - intra-abdominal Abscess - peritonsillar Abscess - skin Abscess - spinal cord Abscess - tooth Absence seizure Absent menses Acanthamoeba keratitis Acanthosis nigricans Accelerated hypertension Accelerated silicosis Accelerating angina Achalasia Achilles tendinitis Achondrogenesis Achondroplasia Acidosis Acidosis - metabolic Acidosis - respiratory Acne Acne rosacea Acoustic neuroma Acoustic trauma Acquired aplastic anemia Acquired bronchiectasis Acquired disorders of platelet function Acquired immune deficiency syndrome Acquired nephrogenic diabetes insipidus Acrocephalosyndactyly Acrochordons Acrodermatitis Acrodysostosis Acromegaly Actinic keratosis Actinomycosis Actinomycosis pulmonary Acute abdomen Acute adrenal crisis Acute arterial occlusion - kidney Acute bacterial tracheitis Acute bilateral obstructive uropathy Acute bladder infection Acute brain syndrome Acute bronchitis Acute cerebellar ataxia Acute childhood leukemia Acute cholecystitis (Gallstones) Acute colonic ileus Acute cytomegalovirus (CMV) infection Acute gastritis Acute gastroenteritis Acute glomerulonephritis Acute gouty arthritis Acute granulocytic leukemia Acute HIV infection Acute idiopathic polyneuritis Acute intermittent porphyria Acute interstitial (allergic) nephritis Acute interstitial nephritis not NSAID related Acute kidney failure Acute lung injury Acute MI Acute mitral regurgitation Acute mountain sickness Acute necrotizing ulcerative gingivitis Acute pancreatitis Acute rheumatic fever Acute sinusitis Acute tubular necrosis Acute unilateral obstructive uropathy Acute upper airway obstruction ADD Addiction - drug Addictive gambling Addisons disease Adenocarcinoma of renal cells Adenocarcinoma of the bronchus Adenocarcinoma of the endometrium/uterus Adenoids - enlarged Adenoma - secreting Adenoma sebaceum Adenomyoma Adhesion Adhesive capsulitis Adjustment disorder Adolescent depression Adolescent dysmenorrhea Adolescent pregnancy ADPKD Adrenal tumor - Cushing syndrome Adrenocortical carcinoma Adrenoleukodystrophy Adult hypothyroidism Adult Stills disease African trypanosomiasis Agammaglobulinemia Age spots Age-related hearing loss Age-related macular degeneration (ARMD or AMD) Agnogenic myeloid metaplasia Agoraphobia Agranulocytosis Aicardi syndrome AIDS-related complex - ARC Air around the lung AKU Albinism Albrights hereditary osteodystrophy Alcohol abuse Alcohol in pregnancy Alcohol withdrawal Alcohol withdrawal - delirium tremens Alcoholic cardiomyopathy Alcoholic encephalopathy Alcoholic ketoacidosis Alcoholic liver disease Alcoholic neuropathy Alkalosis Alkalosis - respiratory Allergic conjunctivitis Allergic dermatitis Allergic reaction - drug (medication) Allergic rhinitis Allergic vasculitis Allergies Allergy to food Allergy to mold - dander - dust Alopecia areata Alopecia in men Alopecia in women Alpha-L-iduronate deficiency Alport syndrome ALS Alström syndrome Alveolar abnormalities Alveolar proteinosis Alveolar rhabdomyosarcoma Alveolitis Alzheimers disease Amaurosis fugax Amblyopia Amebiasis Amelogenesis imperfecta Amenorrhea - secondary American mountain fever American trypanosomiasis Amniotic constriction bands Amphetamine or sympathomimetic intoxication Amyloid - primary Amyloidosis - cardiac Amyloidosis - cerebral Amyloidosis - hereditary Amyloidosis - secondary systemic Anaerobic pneumonia Anal atresia Anal fissure Analgesic nephropathy Anaphylactic reaction Anaphylactoid purpura Anaplastic carcinoma of the thyroid Ancylostoma braziliense Androblastoma Androgen insensitivity syndrome Anemia Anemia - B12 deficiency Anemia - Fanconis Anemia - hemolytic Anemia - hemolytic - caused by chemicals or toxins Anemia - hemolytic due to G6PD deficiency Anemia - idiopathic aplastic Anemia - idiopathic autoimmune hemolytic Anemia - immune hemolytic Anemia - immune hemolytic - secondary to drugs Anemia - iron deficiency Anemia - iron deficiency - children Anemia - megaloblastic Anemia - sickle cell Anemia of chronic disease Anencephaly Aneurysm Aneurysm - cerebral Aneurysm - thoracic aortic Angina Angina - chronic Angina - variant Angio-osteohypertrophy Angiodysplasia of the colon Angioedema Angiofibroma - juvenile Angioma - cherry Angioma cavernosum Anhidrotic ectodermal dysplasia Ankyloglossia Ankylosing spondylitis Annular pancreas Anorchia Anorexia nervosa Anovulatory bleeding Anterior uveitis Anthrax Anthrax - inhalation Anthrax - skin Anthrosilicosis Anti-glomerular basement membrane antibody disease Antibiotic associated colitis Antisocial personality disorder Antithrombin III deficiency - congenital Anxiety disorder AOP Aortic aneurysm - dissecting Aortic arch syndrome Aortic coarctation Aortic insufficiency Aortic stenosis Aphasia - primary progressive Aphthous ulcer Apnea - sleep apnea syndrome Apoplexy Appendicitis Aquarium granuloma Arias syndrome (type II Crigler-Najjar) Arrhenoblastoma Arterial embolism Arterial insufficiency Arteriosclerosis Arteriosclerosis obliterans Arteriosclerotic heart disease Arteriovenous malformation - cerebral Arteriovenous malformation - pulmonary Arteritis - temporal Arthritis Arthritis - neck Arthritis - osteoarthritis Arthritis - psoriatic Arthritis - rheumatoid Articulation deficiency Arylsulfatase A deficiency Asbestos-related pleural effusion Asbestosis Ascariasis Ascites ASD Aseptic meningitis Aseptic necrosis ASH Asherman syndrome Aspartoacylase deficiency Asperger syndrome Aspergilloma Aspergillosis Aspergillosis - acute invasive Asthma Asthma - occupational exposure Asthma - pediatric Astigmatism Astrocytoma - adults Astrocytoma - children Asymptomatic bacteriuria Asymptomatic HIV infection Ataxia - telangiectasia Atelectasis Atheroemboli - renal Athletes foot Atopic dermatitis Atresia - pulmonary Atrial myxoma Atrophic vaginitis Atypical mycobacterial infection Atypical pneumonia Aural polyps Autism Autoerythrocyte sensitivity Autoimmune disorders Autoimmune hepatitis Autoimmune thyroiditis Autonomic hyperreflexia Autonomic neuropathy Avian influenza Avoidant personality disorder Axillary nerve dysfunction Azotemia - prerenal